Modelling and Analysis of the Epidemic Model under Pulse Charging in Wireless Rechargeable Sensor Networks

With the development of wireless sensor networks (WSNs), energy constraints and network security have become the main problems. This paper discusses the dynamic of the Susceptible, Infected, Low-energy, Susceptible model under pulse charging (SILS-P) in wireless rechargeable sensor networks. After the construction of the model, the local stability and global stability of the malware-free T-period solution of the model are analyzed, and the threshold R0 is obtained. Then, using the comparison theorem and Floquet theorem, we obtain the relationship between R0 and the stability. In order to make the conclusion more intuitive, we use simulation to reveal the impact of parameters on R0. In addition, the paper discusses the continuous charging model, and reveals its dynamic by simulation. Finally, the paper compares three charging strategies: pulse charging, continuous charging and non-charging and obtains the relationship between their threshold values and system parameters.

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On the Impact of Local Processing for Motor Monitoring Systems in Industrial Environments Using Wireless Sensor Networks

International Journal of Distributed Sensor Networks ◽

10.1155/2013/471917 ◽

2013 ◽

Vol 9 (7) ◽

pp. 471917 ◽

Cited By ~ 4

Author(s):

Ruan Delgado Gomes ◽

Marcéu Oliveira Adissi ◽

Abel Cavalcante Lima-Filho ◽

Marco Aurélio Spohn ◽

Francisco Antônio Belo

Keyword(s):

Wireless Sensor Networks ◽

Sensor Networks ◽

Wireless Sensor ◽

Local Processing ◽

Monitoring Systems ◽

Industrial Environments ◽

The Impact

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Political Instability and Growth: Case of the Developing Countries

International Journal of Social Science Research ◽

10.5296/ijssr.v2i1.3973 ◽

2013 ◽

Vol 2 (1) ◽

pp. 19

Author(s):

Said JAOUADI ◽

Lamia ARFAOUI ◽

Azza ZIEDI

Keyword(s):

Developing Countries ◽

Empirical Investigation ◽

Political Instability ◽

Political Environment ◽

Huge Number ◽

Effective Governance ◽

The Social ◽

The Stability ◽

The Impact ◽

The Relationship

The paper attempted to examine the causal relationship between political instability and growth. Currently, the world continues to record huge number of popular revolutions in the region MENA, to improve the social environment and to consolidate implementing an effective governance. Although, the uprising has harmed the financial and economic situation in these countries, and became a threat for the stability of the countries, in overall.The manuscript accounts for the impact of political instability on the growth of the developing countries, in the shadow of the widespread of the revolutions since 2011. The paper attempted to illuminate the reality of the relationship between political environment and growth through the estimation of panel, comprising 69 developing countries 1985-2012.In the current paper, the authors conducted an empirical investigation, in which we bore out the claims raised in many surveys and the conclusions drawn by several authors about the harmful impact of political instability on the fundamental bases of the economy, in countries recording political instability.

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Adaptive Modeling of Routing Algorithms for Wireless Sensor Networks

Technological Innovations in Adaptive and Dependable Systems ◽

10.4018/978-1-4666-0255-7.ch005 ◽

2012 ◽

pp. 73-92

Author(s):

Marcello Cinque ◽

Catello Di Martino

Keyword(s):

Wireless Sensor Networks ◽

Sensor Networks ◽

Routing Algorithms ◽

Experimental Results ◽

Wireless Sensor ◽

Adaptive Modeling ◽

Modeling Approach ◽

Viable Solution ◽

The Impact

Recent years have witnessed a proliferation of routing algorithms for Wireless Sensor Networks (WSNs), hence complicating the choice of the proper algorithm to be used for a given application. Simulation frameworks represent a viable solution to anticipate crucial choices, however existing solutions do not encompass the impact of changes (e.g., route updates, node crashes) on the nodes behavior and vice-versa. This article proposes a novel adaptive modeling approach to master the complexity of the thorough simulation of routing algorithms for WSN. Experimental results are provided showing the effectiveness of the proposed approach at managing changes, and dealing with detailed aspects, during the simulation and comparison of several routing algorithms.

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Do alternative weighting approaches for an Index of Multiple Deprivation change the association with mortality? A sensitivity analysis from Germany

BMJ Open ◽

10.1136/bmjopen-2018-028553 ◽

2019 ◽

Vol 9 (8) ◽

pp. e028553 ◽

Cited By ~ 1

Author(s):

Florian Schederecker ◽

Christoph Kurz ◽

Jon Fairburn ◽

Werner Maier

Keyword(s):

Age Groups ◽

Total Mortality ◽

Premature Mortality ◽

Area Deprivation ◽

Multiple Deprivation ◽

The Stability ◽

Weighting Procedures ◽

The Impact ◽

The Relationship ◽

Index Of Multiple Deprivation

ObjectivesThis study aimed to assess the impact of using different weighting procedures for the German Index of Multiple Deprivation (GIMD) investigating their link to mortality rates.Design and settingIn addition to the original (normative) weighting of the GIMD domains, four alternative weighting approaches were applied: equal weighting, linear regression, maximization algorithm and factor analysis. Correlation analyses to quantify the association between the differently weighted GIMD versions and mortality based on district-level official data from Germany in 2010 were applied (n=412 districts).Outcome measuresTotal mortality (all age groups) and premature mortality (<65 years).ResultsAll correlations of the GIMD versions with both total and premature mortality were highly significant (p<0.001). The comparison of these associations using Williams’s t-test for paired correlations showed significant differences, which proved to be small in respect to absolute values of Spearman’s rho (total mortality: between 0.535 and 0.615; premature mortality: between 0.699 and 0.832).ConclusionsThe association between area deprivation and mortality proved to be stable, regardless of different weighting of the GIMD domains. The theory-based weighting of the GIMD should be maintained, due to the stability of the GIMD scores and the relationship to mortality.

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Performance Evaluation and Interference Characterization of Wireless Sensor Networks for Complex High-Node Density Scenarios

Proceedings ◽

10.3390/ecsa-5-05729 ◽

2018 ◽

Vol 4 (1) ◽

pp. 28

Author(s):

Mikel Celaya-Echarri ◽

Leyre Azpilicueta ◽

Peio Lopez-Iturri ◽

Erik Aguirre ◽

Francisco Falcone

Keyword(s):

Wireless Sensor Networks ◽

Wave Propagation ◽

Sensor Networks ◽

Radio Wave ◽

Radio Wave Propagation ◽

Outdoor Environment ◽

Wireless Sensor ◽

5 Ghz ◽

The Impact ◽

Indoor And Outdoor

The uncontainable future development of smart regions, as a set of smart cities’ assembled networks, is directly associated with a growing demand of full interactive and connected ubiquitous smart environments. To achieve this goal of global connection, a large number of transceivers and multiple wireless systems will be involved to provide user services and applications (i.e., Ambient Assisted Living, emergency situations, e-health monitoring, or Intelligent Transportation Systems) anytime and anyplace, regardless of the devices, networks, or systems used. Adequate, efficient, and effective radio wave propagation tools, methodologies, and analyses in complex environments (indoor and outdoor) are crucial to prevent communication limitations such as coverage, capacity, speed, or channel interferences due to nodes’ density or channel restrictions. In this work, radio wave propagation characterization in an urban indoor and outdoor environment, at ISM 2.4 GHZ and 5 GHz Wireless Sensor Networks (WSNs), has been assessed. The selected scenario is an auditorium placed in a free open area surrounded by inhomogeneous vegetation. User density within the scenario, in terms of inherent transceivers density, poses challenges to the overall system operation, given by multiple node operation which increases overall interference levels. By means of an in-house developed 3D ray launching algorithm, the impact of variable density wireless sensor network operation within this complex scenario is presented. This analysis and the proposed simulation methodology can lead in an adequate interference characterization, considering conventional transceivers as well as wearables, which provide suitable information for the overall network performance in complex crowded indoor and outdoor scenarios.

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ANALYSIS AND EVALUATION OF RANDOM PLACEMENT STRATEGIES IN WIRELESS SENSOR NETWORKS

Journal of Circuits System and Computers ◽

10.1142/s0218126614501382 ◽

2014 ◽

Vol 23 (10) ◽

pp. 1450138 ◽

Cited By ~ 2

Author(s):

THAIER HAYAJNEH ◽

SAMER KHASAWNEH

Keyword(s):

Wireless Sensor Networks ◽

Sensor Networks ◽

Network Performance ◽

Quality Measures ◽

Wireless Sensor ◽

Hybrid Strategy ◽

Deployment Strategy ◽

Area Of Interest ◽

Random Placement ◽

The Impact

Wireless sensor networks (WSNs) are an attractive choice for many applications where sensors are densely and efficiently deployed in an area of interest. For example, in surveillance applications, where deterministic placement is not applicable, the sensors have to be randomly deployed entirely or partially in an area. Whether random or deterministic, the strategy of deploying the sensors has a large impact on the performance of WSNs. In this paper, we propose a systematic methodology for sensors placement based on several random distributions. The quality of deployment is evaluated using a set of proposed measures, the significance of which highly depends on the WSN application. The impact of these deployment strategies on the network performance is thoroughly studied. Moreover, we propose a new hybrid deployment strategy that aims to achieve the best performance based on the suggested deployment quality measures. Both the placement strategies with the deployment quality measures are evaluated using extensive simulations. The results show that the proposed hybrid strategy outperformed other strategies including uniform, random, Gaussian, and exponential distributions. In addition, the paper identifies the family of applications where each of the quality measures is highly critical.

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An Analysis of the Use of Multiple Transmission Power Levels on Wireless Sensor Networks

Proceedings ◽

10.3390/ecsa-5-05739 ◽

2018 ◽

Vol 4 (1) ◽

pp. 3

Author(s):

Felipe Antonio Moura Miranda ◽

Paulo Cardieri

Keyword(s):

Wireless Sensor Networks ◽

Sensor Networks ◽

Wireless Sensor ◽

Great Effort ◽

Transmission Power ◽

Multihop Wireless ◽

Negative Results ◽

Wide Perspective ◽

The Impact ◽

Multiple Transmission

The energy consumption in wireless sensor networks is the critical concern of different studies, especially because of the great effort, or even the impossibility, to replace the battery of their motes. Consequently, it is fundamental to investigate and evaluate the energy spent by every individual task executed by the motes in order to provide an efficient use of their batteries. In this work, we employ different metrics to present a thorough study of how the use of multiple transmission power levels affects multihop wireless sensor networks. This work is motivated by the current employment of the multiple transmission power levels, on both academic works and commercial solutions, which is a novel feature of some radio transceivers commonly used in wireless sensor network motes. Aiming for reliable and extensive analysis, this study employs simulations in different scenarios and models of commonly employed electronic components. The contribution of this works is a detailed investigation of the impact caused by the use of different transmission power levels employing different metrics, offering a wide perspective on the subject. In general, the results of this study indicate that the use of multiple power levels grants both positive and negative results, according to the scenario and metrics analyzed.

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The impact of fading and shadowing on the network performance of wireless sensor networks

International Journal of Sensor Networks ◽

10.1504/ijsnet.2008.019006 ◽

2008 ◽

Vol 3 (4) ◽

pp. 211 ◽

Cited By ~ 12

Author(s):

Bao Hua Liu ◽

Brian P. Otis ◽

Subhash Challa ◽

Paul Axon ◽

Chun Tung Chou ◽

...

Keyword(s):

Wireless Sensor Networks ◽

Sensor Networks ◽

Network Performance ◽

Wireless Sensor ◽

Fading And Shadowing ◽

The Impact

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GROWTH INTENTIONS AND ACTUAL GROWTH: THE IMPACT OF ENTREPRENEURIAL CHOICE

Journal of Enterprising Culture ◽

10.1142/s0218495896000022 ◽

1996 ◽

Vol 04 (01) ◽

pp. 1-17 ◽

Cited By ~ 56

Author(s):

LARS KOLVEREID ◽

ERLEND BULLVAG

Keyword(s):

Graduate School ◽

Firm Growth ◽

Longitudinal Design ◽

Growth Patterns ◽

Design Data ◽

Actual Growth ◽

Global Entrepreneurship ◽

The Stability ◽

The Impact ◽

The Relationship

Acknowledgements: We would like to thank the Norwegian Royal Ministry of Industry and the Bodø Graduate School of Business for the financial support that made this research possible. We would also like to thank the Society of Associated Researchers in Entrepreneurship under whose auspices the data for this study was collected. An earlier version of this paper was presented at the 3rd Annual Global Entrepreneurship Conference, Lyon, France, March 1993. The present research investigated: (1) the relationship between entrepreneurs’ growth intentions and actual firm growth, (2) the stability of growth intentions, and (3) the relationship between changes in intentions and actual firm growth. Using a longitudinal design, data were collected from Norwegian entrepreneurs for 1990 and 1992. The results indicate that growth intentions may be used to predict actual growth, that past intentions are related to later intentions, and that changes in growth intentions are associated with changes in growth patterns.

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